Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2006-12-19
2006-12-19
McNeil, Jennifer (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S679000, C428S680000, C416S24100B
Reexamination Certificate
active
07150922
ABSTRACT:
A beta-phase nickel aluminide (NiAl) overlay coating (24) and method for modifying the grain structure of the coating (24) to improve its oxidation resistance. The coating (24) is deposited by a method that produces a grain structure characterized by grain boundaries (44) exposed at the outer coating surface (36). The grain boundaries (44) may also contain precipitates (40) as a result of the alloyed chemistry of the coating (24). During or after deposition, the overlay coating (24) is caused to form new grain boundaries (34) that, though open to the outer surface (36) of the coating (24), are free of precipitates or contain fewer precipitates (40) than the as-deposited grain boundaries (44). New grain boundaries (34) are preferably produced by causing the overlay coating (24) to recrystallize during coating deposition or after deposition as a result of a surface treatment followed by heat treatment.
REFERENCES:
patent: 4084025 (1978-04-01), Rairden
patent: 4142023 (1979-02-01), Bornstein et al.
patent: 4414249 (1983-11-01), Ulion et al.
patent: 4512817 (1985-04-01), Duhl et al.
patent: 5116691 (1992-05-01), Darolia et al.
patent: 5645893 (1997-07-01), Rickerby et al.
patent: 6042898 (2000-03-01), Burns et al.
patent: 6153313 (2000-11-01), Rigney et al.
patent: 6190124 (2001-02-01), Freling et al.
patent: 6221512 (2001-04-01), Rickerby
patent: 6291084 (2001-09-01), Darolia et al.
patent: 6340500 (2002-01-01), Spitsberg
patent: 6365236 (2002-04-01), Maloney
patent: 6482469 (2002-11-01), Spitsberg et al.
patent: 6485792 (2002-11-01), Grylls et al.
patent: 6565672 (2003-05-01), Spitsberg et al.
patent: 6571857 (2003-06-01), Darolia et al.
patent: 6572981 (2003-06-01), Spitsberg
patent: 6579627 (2003-06-01), Darolia et al.
patent: 6607789 (2003-08-01), Rigney et al.
patent: 6620524 (2003-09-01), Pfaendtner et al.
patent: 2003/0041926 (2003-03-01), Spitsberg et al.
Darolia Ramgopal
Lee Elissa Hae-Kyung
Pfaendtner Jeffrey Allan
Rigney Joseph David
Spitsberg Irene
Hartman Domenica N. S.
Hartman Gary M.
McNeil Jennifer
Narciso David L.
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